<!DOCTYPE html>
<html>
<head>
<title>下拉菜单实例|菜鸟教程(runoob.com)</title>
<meta charset="utf-8">
<style>
ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

li {
    display:inline;
}

li a, .dropbtn {
    display: inline-block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover, .dropdown:hover .dropbtn {
    background-color: #ff0000;
}

.dropdown {
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}

.dropdown-content a {
    color: #ff0000;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

.dropdown-content a:hover {background-color: #f1f1f1}

.dropdown:hover .dropdown-content {
    display: block;
}
</style>
</head>
<body>
<div id='nav'>
    <ul>
      <li><a class="active" href="#home">主页</a></li>
      <li><a href="#news">新闻</a></li>
      <div class="dropdown">
        <a href="#" class="dropbtn">下拉菜单</a>
        <div class="dropdown-content">
          <a href="#">链接 1 啦啦啦</a>
          <a href="#">链接 2</a>
          <a href="#">链接 3</a>
        </div>
         
      </div>
         <li><a href="#news">新闻</a></li>
    </ul>

</div>


<h3>导航栏上的下拉菜单</h3>
<p>鼠标移动到 "下拉菜单" 链接先显示下拉菜单。</p>

</body>
</html>
